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Title: Propagation of localized structures in relativistic magnetized electron-positron plasmas using particle-in-cell simulations

We use a particle-in-cell simulation to study the propagation of localized structures in a magnetized electron-positron plasma with relativistic finite temperature. We use as initial condition for the simulation an envelope soliton solution of the nonlinear Schrödinger equation, derived from the relativistic two fluid equations in the strongly magnetized limit. This envelope soliton turns out not to be a stable solution for the simulation and splits in two localized structures propagating in opposite directions. However, these two localized structures exhibit a soliton-like behavior, as they keep their profile after they collide with each other due to the periodic boundary conditions. We also observe the formation of localized structures in the evolution of a spatially uniform circularly polarized Alfvén wave. In both cases, the localized structures propagate with an amplitude independent velocity.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [4]
  1. Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Concepción, Concepción 4070386 (Chile)
  2. Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago (Chile)
  3. Geospace Physics Laboratory, Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, Maryland 20771 (United States)
  4. (CEDENNA), Santiago 9170124 (Chile)
Publication Date:
OSTI Identifier:
22490137
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALFVEN WAVES; BOUNDARY CONDITIONS; ELECTRONS; MAGNETIZATION; MATHEMATICAL SOLUTIONS; NONLINEAR PROBLEMS; PLASMA; PLASMA SIMULATION; POSITRONS; RELATIVISTIC RANGE; SCHROEDINGER EQUATION; SOLITONS